package cn.com.app.v320;

import java.util.HashMap;

public class MapT {

	public static void main(String[] args) {
		HashMap<String, Object> paramMap = new HashMap<String, Object>();
		paramMap.put("China", "中国");
		System.out.println(paramMap.get("China"));
		
		paramMap.put("Americ", "美国");
		paramMap.remove("China");
		System.out.println(paramMap.get("China") == null);
		System.out.println(paramMap.get("Americ"));
		
	}

}
